Welcome to Highrock Covenant Preschool Thank you for coming to our web site. We are excited that you have chosen to visit our site and hope you find what you need. We are a faith-based preschool, located in Arlington Heights, Massachusetts, that provides a warm and loving first-education environment for preschool-age children. We offer flexible part-time and full-time programs for your child and your schedule. If you need more information than our site provides please contact us at or 781-646-4427.